Text Parsing Behaviour Different by OS for flags

[Mark]

Anyone else found that text parsing behaviour seems to be different by OS?

For example, I found that is I have a flag Don't Forget then on the windows OS, in text parsing if I input "make sure you call Mum -fldon't forget, then I will get a task "make sure you call mum forget" with the flag don't forget i.e. the parsing cannot handle two word flags, items. But if I simply use the 1st word -fldon't then it works correctly.
However, on Android the Don't Forget Flag does not work at all - I assume due to the use of "'" character.